Bag-opening machine.



J. HENDERSON & E. R. TIETZ.

BAG OPENING MACHINE.

APPLICATION FILED PBBJS, 1914. 1 1 1 1 89 9 Patented Sept. 29, 1914. 4

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, 53 v WITNESSES: g 4 mwona VG .78 M 5W3! K W a 5 4e 57 BY W ATTORNEY J. HENDERSON & E. R. TIETZ. BAG OPENING MACHINE.

APPLICATION FILED r3343. 1914.

1,1 1 1 ,899, A Patented Sept. 29, 1914.

2 SHEETS-SHEET 2. 5 SI FIE-7 ELIE-1E! WITNESSES: I INVENTURS KH K NM- lTTOR/IEY JOHN HENDERSON AND ERNEST R. TIETZ, OF TOLEDO, OHIO.

BAG-OPENING MACHINE.

Specification of Letters Patent.

Patented Sept. 29, 1914.

Application flled February 13, 1914. Serial No. 818,497.

To all whom it may concern:

Be it known that we, JOHN HENDERSON and ERNEST R. T n'rz, citizens of the United States, each residing at Toledo, Lucas county, Ohio, have invented a new and useful Bag-Opening Machine, of which the following is a speclfication.

This invention relates to an automatic device for handling articles.

This invention has utility when embodied in mechanisms for taking a bag, opening the bag, and delivering it for filling.

Referring to the drawings: Figure 1 is a fragmentary front elevation of the machine of the invention and its driving combination; Fig. 2 is a detail in plan of a portion of the driving connections; Fig. 3 is a fragmentary plan view of the bag holder or pocket tilting cams; Fig. 4 is a view of the delivery device gripping jaws; in open position or set; Fig. 5 is a view similar to Fig. 4 with the jaws tripped or in closed position, Fig. 6 is a detail view of the driving means for the bag remover; Fig. 7 is a fragmentary side elevation of the bag opening machine from the right in Fig. 1; Fig. 8 is a section on the line VIII-VIII, Fig. 7, looking in the direction of the arrow, showing the bag opener; Fig. 9 is a back view of the bag holder or pocket, and Fig. 10 is a view looking into the upper end of the bag holder or pocket. I

In the running of the machine in connection with the packagingof material in bags and sealing the same, as in the handling of tobacco, the opening machine may deliver to a filling machine which delivers to a sealing machine. Ad acent the sealing platform 1 is the operator's station with the hand lever 2 in a convenient position for shifting as desired at all' times. The hand lever or control is connected by the link 3 and the arm 4: to rock the shaft 5 carrying the cam 6' effective to move the foot lever brake shoe 7 against the resistance of the spring 8 to release the wheel 9 so that its shaft 10 may be driven. For simultaneous control with this brake wheel 9, the shaft 5 has the arm 11 connected by the link 12 to oscillate the lever 13 to throw the clutch 14 into position to be driven by thedriving pulley 15 loose on the shaft 10 while the clutch is fast on said shaft. This driving of the shaft 10 as permitted with the brake 7 out of holding position, rotates the gear 16 in mesh with the gear 17 fast on the shaft 18 carrying the bevel gear 19 in mesh with the gear 20 on the shaft 21 carrying the driving pin 22 driving the star wheel 23 90 during each rotation of the shaft 21, and holding the star wheel 23 during the remaining 270, so that the shaft 24 and its gear 25 are given intermittent driving.

From the scaling shaft turret drive wheel 25, the intermediate gear 26 serves to oppo-' sitely drive in synchronism the gear 27 splined to rotate the filling shaft 28. Fast with the gear 27 is the sprocket wheel 29 which through the sprocket chain 30 and the sprocket wheel 31 drives the bag opening machine holder platform 32 in synchronism and intermittently with the shaft .The sprocket wheel 33 fast on the shaft 18, through the sprocket chain 34 and the sprocket wheel Sidrives the shaft 36 continuously to give a timecL rotation for each step in the travel of the table or platform 32. Disposed above the shaft 36 is the magazine 87 in which may be similarly stacked the flat bags 38 having lateral edges. The structure disclosed is especially adapted for handling bags having linings usually having one side of the open end a little longer than the other. Such bags 38 are stacked with the longer side of the open ends down to rest upon knife points 39 which may be rocked by the adjusting nuts to to vary their upward projection. The shaft 36 carries the arm 11 having pivoted thereon the rubber faced shoe 42 tilted yield-ably by the spring 43 to rub against the bottom bag in the magazine 37 and draw it away from the knives 39, which will cut therethrough and grip thenext higher bag, holding such next higher bag while the pull-off device effects removal of the bottom bag from the magazine and thrusting of such bag along the way 14.- There is an opening in the lower portion of the magazine 37 through which the shoe 12 extends to engage and remove a bag therefrom during each rotation.

The delivery device takes the bags which the pull-off device has removed from the magazine. Fast on the shaft 36 is the second crank 45 connected by the link 46 to reciprocate the slide 47 on the guide 18. This slide 47 carries the fixed jaw 49 and the relatively movable jaw 50 having rigid therewith the arm 51 engaged by the spring 52 to keep the jaws in closed or gripping position. To hold the jaws in open position, there is rigid with the arm 51 a lug 53, which when the jaw 50 is raised is in position for the trigger 54: to be held thereagainst by the spring As the slide 4:7 moves toward its limit of'travel adjacent the magazine 37 the trip 56 is struck by the trigger 51 and rocked free of the lug so that the spring 52 acts to bring the jaws 50, 49 toward each other to engage therebetween the bag on the way 44 which has just been thrust there by the pull-off device. As the slide 17 recedes from the magazine 37, it takes the bag with it and carries it over the chute 57, when the arm 51 rides upon the cam 58 to gradually raise the jaw 50, freeing the bag for sliding down the chute 57. Continued travel of the slide 47, causes the arm 51 to strike the reset 59 which tilts the arm 51 sufficiently to permit the spring to draw the trigger 5-1 under the lug 58 and hold the jaw 50 in open or set position for a repetition of this delivery action as each bag is pulled off from the magazine.

The bag sliding down the chute 57 is delivered to a pocket or bag holder 60 pivotally mounted on the rotatable platform 32. These holders 60 in their rotation are held by the springs 61 against the relatively fixed cams 62-, 63 which serve as guides to tilt the holders 60, into positions for bag opening and bag removal, respectively.

The holder 60 is provided near the lower or pivoted end thereof with the keeps or guides 64 within which the bag may slide in its entrance into the holder from the chute Hinged to each side of the holder 60 is an arm having inwardly projecting opposing gripping means 66, which as actuated by the spring 67 serve to hold the edges of a bag so that the intermediate bag sides bulge away from each other and keep the bag open. The tongue or hinged member 68 when its arm (39 is actuated downward moves between the back inwardly extending portions of the arms to force them apart, thereby placing the gripping means 66 in set position to be tripped by the rocking of the member 70 which is directly connected to the member 68 to swing this member ('38 out from between the arms 65 thereby allowing the spring 67 to act in bringing the means (36 into gripping position.

To effect the bag opening and removal driving means is provided from the filliu machine. Mounted on the shaft 18 (Fig. (3 is the sprocket wheel 71, which through the sprocket chain 72 drives the sprocket wheel 73 on the shaft 71 carrying the cam 75 with which coacts the pin 76 carried by the link 7'7 extending to the toggle 78, 79, having its opening action assisted by the spring 80. The link '78 (Fig. 1) is connected to the shaft 28 to draw it downward relatively to its driving gear 27 and between the intermittent drivings thereof. The shaft 28 carries the arms 81 rotatable therewith and having the blocks 82 carrying the downwardly extending fixed bag entering members 83 and the opposing relatively movable bag entering members 84. The member 8 1 has the upwardly extending arm 85 carrying the roller 86 coacting with the cam 87 on the non-rotative head frame 88, to shift the member 84 into proximity with the member 83 for bag entering travel, as the head 88 moves downward with the shaft 28 as pulled by the toggle 78, 79. Reciproeable with the head frame 88 is the reset arm 89 which in its downward travel strikes the arm (59 to force the hinged member 68 downward and move the gripping means (it) out of action position simultaneously with the travel of the bag entering members 83, 81 entrance into the bag on the holder (30, so'that in the recover or upward travel of the members 83, 81, the bag is lifted thereby and carried away in the 90 step by step travel for filling while the next arm 81 brings another pair of entering members for a repetition of this operation. WVith this downward travel of the head frame 88 moves the arm 90 connected to reciprocate the rod 91 to which is pivoted the opener 92 disposed by the tilt of the holder 60 to strike the bag between the long and short sides and slide therebetween, with the bow sections and the spring Wires 94: assisting in bulging open the bag. The pivot rod 95 carrying the opener 92 extends to carry the trip 96 which in this downward travel strikes the member 70 as the bag is opened by the opener 92, thus causing the member 68 to move against the yielding wire stop 68 and away from the back of the holder 60 so that the spring 67 acts to bring the gripping means 66 into bag engaging position with the bag edges to hold the bag in this bulged open position. Mounted on the way 44: and chute 57 are the fixed members 97 which serve to guide the crosshead 98 of the rod 91 in its reciprocations. Pivoted to the members 97 are the wires 99 carrying the cross piece 100 yieldably held by proper position at the top for the opener 92 to enter. The stepby step travels of the mechanisms are in synehronism for regular supply of bags which have been opened to the filling machine, and thence to the sealer.

No attention is needed for the opener, other than keeping of the magazine charged, and the entire packaging may be easily cared for by the single machine operator at the sealing machine.

What 1s claimed and it is desired to secure I eral edges, tilting means including a' guidefor directing the tilting of the pocket into position to receive an unopened bag, said ocket being provided with gripping means or ressing edges of the bag inwardto hold the ag open, and means for actuating the gripping means after the bag is received in the pocket. r a

-3. A bag opening machine embodying a pocket for receiving a flat bag having lateral edges, tilting means including a guide for directing the tilting of the pocket into position to receive an unopened bag, saidpocket being provided with a movable gripping means for pressing an edge of the bag inward to hold the bag open, and means for actuating the gripping means after the bag is received in the pocket.

4. A bag opening machine embodying a pocket for receiving a flat bag having lateral edges, tilting means including a guide for directing the tilting of the pocket into position to receive an unopened bag, said pocket;

being provided with a movable gripping means for pressing an edge of the bag inward, and a trip for actuating the gripping means, and means for actuating the gripping means after the bag is received in the pocket. 1

5. A bag opening-machine embodying a' pocket for receiving a flat bag having lateral edges, tilting means including a guide for directing the tilting of the Pocket into position to receive an unopened bag, said pocket being provided with a. movable gripping means for pressing an edge of the bag inward, a trip for releasing the gripping means, and a reset for the gripping means, and means for actuating the gripping means after, the bag is received-in the pocket.

6. A bag openingw machine embodyin a bag holder for receiving a fiat bag having lateral edges, said holder being provided with relatively movable bag edge gripping means set to receive a bag to be opened, a bag opening member reciprocable relatively to the holder to enter and open a bag in said holder, and a trip for releasing the gripping means to move into position to hold the bag open. 1

7. A bag opening machine embodying a bag holder for receiving a flat bag having lateral edges, said holder being provided with relatively movable bag edge gripping means set to receive a bag tobe opened, a bag openingmember reciprocable relatively to the holder to enter and open a bagin said holder, a trip for releasing the gripping means to move into position to hold the bag open when the member is out of the bag, and means for removing the open bag from the holder.

8."A bag opening machine embodying a bag holder for receiving. a flat bag having lateral edges, saidholder being provided with relatively movable bag edge gripping means 'set to receive a bag to be opened, a bag opening member reciprocable relatively to the holder to enter and open a bag in said holder, a trip for releasing the gripping means. to move into position to hold the bag open when the member is out of the bag, means for removing the open bag from the holder, anda reset for the gripping means.

9. A bag opening machine embodying a bag holder for receiving a bag having lateral chronism therewith to release'the gripping means, means for removing the open bag from the holder, and a reset operable 1n synchronlsm with the bag removmg means to reset the gripping means.

10. A bag opening machine embodying a bagliolder for receiving a bag having lateral edges, said holder being provided with bag edge gripping means movable relatively to the holder set to receive a bag to be opened, a pivoted bag opener reciprocable relatively to the holder to open a bag in said holder, and a trip to release the gripping means to hold the bag open.

11'. A bag opening machine embodying a tiltable bag holder forreceiving a flat bag, having lateral edges, an opener for the bag in the holder, gripping means for holding the ba open, by engaging the lateral edges of the bag and means for releasing the gripping means and removing the bag from the holder.

12. A bag opening machine embodying a bag supply magazine, a pull-ofi' device for removing. bags from the magazine, a bag In testimony whereof we afiix our signaholder, a delivery device for taking bags tures in the presence of two witnesses. from the pull-off device and delivering to the holder comprising a pairof opposing 5 bag gripping jaws, a bag opener coactin with the holder to open bags therein, an Witnesses:

means for removing open bags from the GEO. E. KIRK,

holder. 7 GLADYS J AMESON. 

